Do you sump your HW extended range tanks

[dwilson]

I am building a 10 and want to use the HW extended range tanks.

I am wondering how you check them for water accumulation. I don't see anything about it on the website.

Thanks,

 

[dmaib]

No way, that I know of, to check for water. I suppose a mod could be done to the inboard end of the "tube", just before it plumbs into the main tank, to install a drain. I think that would be the lowest point in the ER tank. The pump and plumbing access panel in the bottom of the wing could be designed to allow access to the drain, for pre-flight fuel check.
I don't use my ER tanks too often and never have any water in my wing sumps on pre-flight.

 

[TroyBranch]

During the walk around, turn the pump on for 5 seconds then sump the main tanks after five minutes. Not sure of any other way. The water should be at the outlet and end up in the mains if there is any.

 

[JoeB]

wing and tanks stress

I know a concern of doing "double tanks"
puts too much weight on the Spar.

Woulds doing these, or the "90 Gallon" option that I have read about cause the same issues.